Which side of Einthoven's triangle is formed by Lead I?

An adult patient who is NOT experiencing difficulty breathing will:

A. have a respiratory rate that is between 20 and 24 breaths/min. B. exhibit an indentation above the clavicles and in between the ribs. C. be able to speak in complete sentences without unusual pauses. D. assume a position that will facilitate effective and easy breathing.

While checking a polarographic (Clark) electrode, you determine that the device fails to read 100% when exposed to pure O2. Which of the following actions would be the proper first step?

a. Check the silica crystals. b. Send the device out for repair. c. Replace the analyzer's batteries. d. Change the analyzer's fuel cell.